A material testing device for rubber preparation

Abstract

The present invention discloses a material testing device for rubber preparation, which belongs to the technical field of rubber performance testing, and comprises a testing platform, on which a durability simulation mechanism and a durability testing mechanism are arranged, which are respectively used to simulate the working state of a rubber sheath and to test the working performance of the rubber sheath in the working state. The present invention can simulate the straight folding working process and the bending folding working process of the rubber sheath through the cooperation of the durability simulation mechanism and the durability testing mechanism, and can adjust the bending degree of the rubber sheath by changing the rotation speed of the twisting simulation motor, so as to highly restore the use process of the rubber sheath, and through multiple simulations, can make the rubber sheath age quickly, amplify its performance defects in the durability simulation test, so that when the durability testing mechanism performs the tensile strength and material uniformity test, the material strength and durability of the rubber sheath can be quickly detected.

Description

Technical Field

[0001] The invention relates to the technical field of rubber performance detection, in particular to a material detection test device for rubber preparation. Background Art

[0002] Rubber preparation is the production of various rubber products using natural and synthetic rubber or renewable waste rubber as raw materials. Rubber products can be used in daily and medical industries, as well as in mining, transportation, machinery, construction and other industries.

[0003] Among them, in order to protect the telescopic components and the bending components, rubber sheaths are often set at the telescopic parts and the bending parts to isolate the adverse factors in the external environment and prevent the adverse factors in the external working environment from entering the telescopic parts and the bending parts, hindering the normal operation of the hydraulic telescopic components and the bending mechanisms. For example, corrosive gases, dust and humid gases in the external working environment will cause corrosion and movement resistance to the telescopic parts and the bending parts, affecting the accuracy of use. After the rubber sheath is folded or folded and bent many times, its aging degree will be accelerated, causing the tensile strength and uniformity of the material to decrease. In order to explore the material properties of the rubber sheath, its durability needs to be tested. Summary of the invention

[0004] The purpose of the present invention is to solve the problem in the prior art that when a rubber sheath is used to protect the active parts of an active component, its performance will decline after repeated use and its durability needs to be tested, and a material testing device for rubber preparation is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A material testing device for rubber preparation, comprising a testing platform for rubber sheath testing, a clamping assembly is arranged on the testing platform, the clamping assembly is composed of a bottom clamping sleeve and a top clamping sleeve, and the inner diameters of the bottom clamping sleeve and the top clamping sleeve are both adjusted by adjusting bolts, and a durability simulation mechanism and a durability testing mechanism are arranged on the testing platform;

[0007] The durability simulation mechanism is used to simulate the working state of the rubber sheath, and is composed of a clamping and matching assembly and a simulation assembly arranged on the top of the test bench. The clamping and matching assembly includes a sealing clamping disk and a movable clamping bracket arranged on the test bench. A locking column is fixedly installed on the sealing clamping disk, and the locking column locks the bottom end of the rubber sheath through a bottom clamping sleeve. The bottom of the movable clamping bracket is rotatably connected to a clamping limit platform, and the bottom of the clamping limit platform is slidably connected to a movable clamping column through a twisting limit sliding groove, and the movable clamping column locks the top end of the rubber sheath through a top clamping sleeve;

[0008] The simulation component includes a twisting simulation motor arranged on the top of the movable clamping bracket, the output shaft of the twisting simulation motor is fixed to the clamping limit platform, the clamping limit platform provides a supporting force for the movable clamping column through a compression spring, and a folding simulation motor is arranged on the top of the movable clamping bracket, the output shaft of the folding simulation motor is fixed to a folding simulation column, and the folding simulation column is slidably connected to the movable clamping bracket through a folding simulation groove;

[0009] The durability detection mechanism is used to detect the working performance of the rubber sheath, and includes a detection strip arranged between the locking column and the movable clamping column. The detection strip is composed of a support ring and a connecting column. A tension sensor is arranged between two adjacent connecting columns, and a photosensitive sensor is arranged on the surface of the connecting column.

[0010] Preferably, the outer surfaces of the locking column and the movable clamping column are both provided with closed rings, which cooperate with the bottom clamping sleeve and the top clamping sleeve to close the inner and outer spaces of the rubber sheath.

[0011] Preferably, a positioning magnet is fixed inside the clamping limit platform, and a magnetic column is provided on the side of the movable clamping column away from the compression spring. The positioning magnet locks the movable clamping column at the bottom center of the clamping limit platform by attracting the magnetic column.

[0012] Preferably, the movable clamping column is movably connected to a simulated closing column via a universal joint, and the simulated closing column is plugged into the top end of the rubber sheath and cooperates with the top clamping sleeve to lock the top end of the rubber sheath.

[0013] Preferably, a folding driving arm is fixed on the top of the movable clamping bracket, the folding driving arm is slidably connected to the folding simulation groove through a driving column, and the folding simulation groove is arranged in an annular wave shape.

[0014] Preferably, a mounting spring column is arranged in the support ring, and a supporting arc column fixed to the mounting spring column is slidably connected in the support ring, and the outer diameter of the supporting arc column is matched with the diameter of the foldable part of the rubber sheath.

[0015] Preferably, an arc-shaped connecting strip is provided outside the support ring, and the arc-shaped connecting strip is provided between two adjacent support arc-shaped columns, and the arc-shaped connecting strip is fitted with the support arc-shaped column through a contraction spring column, a spring installation groove is provided on the inner wall of the support ring, and the support ring is slidably connected with the installation spring column and the contraction spring column through a sliding groove, and the support ring is connected with one end of the installation spring column and the contraction spring column through a spring.

[0016] Preferably, a closed sleeve is fixedly installed on the top of the detection platform, and an annular light source is fixed on the inner wall of the closed sleeve. When a fracture occurs in the rubber sheath, light from the annular light source passes through the fracture and is captured by the photosensor.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the cooperation of the durability simulation mechanism and the durability testing mechanism, the use process of the rubber sheath can be highly restored, and through multiple simulations, the rubber sheath can be aged quickly, and its performance defects in the durability simulation test can be magnified, so that when the durability testing mechanism conducts tensile rope strength and material uniformity tests, the material strength and durability of the rubber sheath can be quickly detected.

[0019] 2. By combining the twisting simulation motor equipped with the clamping limit table with the folding simulation motor, the straight line folding process and the bending folding process of the rubber sheath can be simulated, and the bending degree of the rubber sheath can be adjusted by changing the rotation speed of the twisting simulation motor, thereby highly restoring the use process of the rubber sheath, making the data detected by the durability testing machine highly similar to the data of the rubber sheath under the actual working state of aging, thereby improving the detection accuracy of the tensile strength and material uniformity of the rubber sheath when it is working.

[0020] 3. By combining the connecting column equipped with a tension sensor with the support ring, the support ring can always be located at the foldable part of the rubber sheath during the folding and extension of the rubber sheath. The tension sensor connected to the adjacent connecting column can detect the tension at various parts of the rubber sheath during the extension process. It can be known whether there is material unevenness that causes a large difference in tension at various parts during the folding and extension process of the rubber sheath, thereby realizing the simultaneous detection of the material uniformity while detecting the tensile strength of the rubber sheath. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of a material detection test device for rubber preparation proposed by the present invention;

[0022] Figure 2 This is a schematic diagram of the overall cross-sectional structure of a material detection test device for rubber preparation proposed by the present invention;

[0023] Figure 3 For the present invention Figure 2 A magnified view of the structure at center A;

[0024] Figure 4 For the present invention Figure 2 A magnified view of the structure at B in the middle;

[0025] Figure 5 This is an exploded view of the overall structure of a material testing device for rubber preparation proposed by the present invention;

[0026] Figure 6 For the present invention Figure 5 A magnified view of the structure at C in the middle;

[0027] Figure 7 This is a schematic diagram of the structure of a detection strip in a material detection test device for rubber preparation proposed by the present invention;

[0028] Figure 8 The present invention is a structural assembly view of a detection strip in a material detection test device for rubber preparation proposed by the present invention.

[0029] Attached figures: 1. detection table; 11. bottom clamping sleeve; 12. top clamping sleeve; 2. sealing clamping disk; 21. locking column; 3. movable clamping bracket; 31. clamping limit table; 311. positioning magnet; 32. movable clamping column; 321. magnetic suction column; 322. universal joint; 323. simulated closed column; 33. folding drive arm; 331. drive column; 4. twisting simulation motor; 5. compression spring; 6. folding simulation motor; 61. folding simulation column; 611. folding simulation groove; 7. detection strip; 71. support ring; 711. installation spring column; 712. support arc column; 713. arc connecting strip; 714. contraction spring column; 72. connecting column; 73. tension sensor; 74. photosensor; 8. closed sleeve; 81. ring light source. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Example, see Figures 1 to 8 A material testing device for rubber preparation includes a testing platform 1 for rubber sheath testing, a clamping assembly is arranged on the testing platform 1, the clamping assembly is composed of a bottom clamping sleeve 11 and a top clamping sleeve 12, and the bottom clamping sleeve 11 and the top clamping sleeve 12 are both adjusted by adjusting bolts. The testing platform 1 is provided with a durability simulation mechanism and a durability testing mechanism;

[0034] It should be noted that: the bottom clamping sleeve 11 and the top clamping sleeve 12 are both set to be open. When the adjusting bolt is rotated by a wrench, the bottom clamping sleeve 11 and the top clamping sleeve 12 can be stably clamped at the bottom and top of the rubber sheath, and the inside of the rubber sheath can be supported by the clamping matching component, so that the internal space of the rubber sheath during the test can be isolated from the external space by the clamping component. This is the clamping method of the existing rubber sheath, and will not be repeated in the subsequent description of the clamping process of the clamping component.

[0035] In the present invention, the test object is a foldable and bendable rubber sheath, which can be reciprocated along the central axis direction, and can also be bent at the top end while the bottom end is stationary to form a curved rubber sheath, and Figure 5 As shown, the rubber sheath is arranged on the outside of the detection strip 7, and its folding parts are arranged equidistantly. When the material is evenly calendered and only the folding process is performed, the tension at each part of the folding parts is the same. These are two morphological change processes and material performance characteristics of the existing rubber sheath participating in the protection process of the telescopic component and the bending component, and will not be repeated in the subsequent description of the morphological change process and material performance of the rubber sheath.

[0036] like Figure 2 and Figure 3As shown, the durability simulation mechanism is used to simulate the working state of the rubber sleeve, and is composed of a clamping and matching assembly and a simulation assembly arranged on the top of the test platform 1. The clamping and matching assembly includes a sealing clamping disk 2 and a movable clamping bracket 3 arranged on the test platform 1. A locking column 21 is fixedly installed on the sealing clamping disk 2. The locking column 21 locks the bottom end of the rubber sleeve through the bottom clamping sleeve 11. The bottom of the movable clamping bracket 3 is rotatably connected to a clamping limit platform 31. The bottom of the clamping limit platform 31 is slidably connected to a movable clamping column 32 through a twisting limit slide groove. The movable clamping column 32 locks the top end of the rubber sleeve through the top clamping sleeve 12.

[0037] It should be noted that: after the bottom end of the rubber sheath is fixed to the top of the sealing clamping plate 2, the top end can be clamped and locked by the movable clamping bracket 3, so that in the subsequent simulation of the working process of the rubber sheath, the internal space of the rubber sheath is isolated from the external space, and the bottom end of the rubber sheath remains stationary relative to the sealing clamping plate 2;

[0038] Furthermore, the outer surfaces of the locking column 21 and the movable clamping column 32 are both provided with closed rings, which cooperate with the bottom clamping sleeve 11 and the top clamping sleeve 12 to close the inner and outer spaces of the rubber sheath, so that the upper and lower ends of the rubber sheath can be closed through the bottom clamping sleeve 11 and the top clamping sleeve 12 and the closed rings arranged above and below. The movable clamping column 32 is movably connected to the simulated closing column 323 through the universal joint 322. The simulated closing column 323 is inserted into the top end of the rubber sheath and cooperates with the top clamping sleeve 12 to lock the top end of the rubber sheath, so that during the sliding process of the movable clamping column 32, it can always maintain the connection state with the simulated closing column 323, and change the inclination angle of the simulated closing column 323, so that the rubber sheath is in a bent state.

[0039] like Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the simulation component includes a twisting simulation motor 4 arranged on the top of the movable clamping bracket 3, the output shaft of the twisting simulation motor 4 is fixed to the clamping limit platform 31, and the clamping limit platform 31 provides a supporting force for the movable clamping column 32 through the compression spring 5, that is, when the movable clamping column 32 rotates, the compression spring 5 can provide it with a centripetal force; a folding simulation motor 6 is arranged on the top of the movable clamping bracket 3, and the output shaft of the folding simulation motor 6 is fixed with a folding simulation column 61, and the folding simulation column 61 is slidably connected to the movable clamping bracket 3 through a folding simulation groove 611, and a folding driving arm 33 is fixed on the top of the movable clamping bracket 3, and the folding driving arm 33 is slidably connected to the folding simulation groove 611 through a driving column 331, and the folding simulation groove 611 is arranged in an annular wave shape, as shown in FIG. Figure 6As shown, the four driving columns 331 are always located at the same height in the same bending direction in the folding simulation groove 611. When the folding simulation column 61 rotates, the folding driving arms 33 rotatingly distributed on the outside thereof are lifted and lowered through the driving columns 331, thereby driving the movable clamping bracket 3 to be lifted and lowered synchronously;

[0040] It should be noted that: since the rubber sheath has two morphological changes, the working process of the rubber sheath simulated by the durability simulation mechanism is also divided into a folding working process and a bending working process, wherein the folding working process of the rubber sheath is as follows: when the rubber sheath is folded, the twisting simulation motor 4 is turned on and kept at a constant speed, and the folding simulation motor 6 is turned on to rotate the folding simulation column 61, thereby driving the movable clamping bracket 3 slidably connected to the folding simulation groove 611 to perform lifting and reciprocating motion, and driving the top of the rubber sheath clamped by the simulated closing column 323 to perform synchronous motion, so as to fold the rubber sheath back and forth;

[0041] The bending simulation process of the rubber sheath is as follows: when the rubber sheath is bent and folded, the twisting simulation motor 4 and the folding simulation motor 6 are turned on at the same time, and the twisting simulation motor 4 is in a working state with adjustable speed, and the folding simulation motor 6 provides folding drive for the bending of the rubber sheath, and the clamping limit table 31 is driven to rotate by the twisting simulation motor 4, so that the movable clamping column 32 makes a circular motion at the bottom of the clamping limit table 31, and the movable clamping column 32 is supported by the compression spring 5, so that the movable clamping column 32 makes a circular motion after deviating from the bottom center of the clamping limit table 31, and the sliding of the movable clamping column 32 drives the top of the rubber sheath clamped by the simulated closing column 323 to move synchronously, so that the rubber sheath is bent as a whole, so that the subsequent durability testing mechanism can test the tensile strength and material uniformity of the rubber sheath when it is working;

[0042] The bending degree of the rubber sheath can be changed by changing the rotation speed of the output shaft of the torsion simulation motor 4 and the rotation speed of the movable clamping column 32, so that the centripetal force required by the movable clamping column 32 is increased, that is, the movable clamping column 32 needs to further squeeze the compression spring 5 to obtain a larger centripetal force. Therefore, by changing the position of the movable clamping column 32, the bending degree of the rubber sheath can be changed within a certain range.

[0043] Furthermore, a positioning magnet 311 is fixed inside the clamping limit platform 31, and a magnetic column 321 is provided on the side of the movable clamping column 32 away from the compression spring 5. The positioning magnet 311 locks the movable clamping column 32 at the bottom center of the clamping limit platform 31 by attracting the magnetic column 321.

[0044] It should be noted that: when it is necessary to perform a performance test on the folding process of the rubber sheath alone, the positioning magnet 311 is turned on to attract the magnetic column 321, so that the movable clamping column 32 is fitted with the positioning magnet 311, and the movable clamping column 32 is always locked at the bottom center of the clamping limit platform 31, so that the simulated closing column 323 at the top of the clamping rubber sheath is also located at the bottom center of the clamping limit platform 31, and then when the folding simulation motor 6 and the twisting simulation motor 4 are started, the rubber sheath is folded and rotated in the direction of the central axis without bending and folding, ensuring that the durability detection mechanism has more accurate performance detection data for the rubber sheath during the folding process.

[0045] like Figure 4 , Figure 7 and Figure 8 As shown, the durability detection mechanism is used to detect the working performance of the rubber sheath, including a detection strip 7 arranged between the locking column 21 and the movable clamping column 32, the detection strip 7 is composed of a support ring 71 and a connecting column 72, a tension sensor 73 is arranged between two adjacent connecting columns 72, and a photosensitive sensor 74 is arranged on the surface of the connecting column 72.

[0046] It should be noted that: the durability detection mechanism can detect the tensile strength and material uniformity of the rubber sheath in the folded and bent folded states respectively, wherein the tensile strength detection process of the rubber sheath is: when the rubber sheath is subjected to a simulation test, the spacing between the plurality of adjacent support rings 71 is changed by the rubber sheath being in an extended state, so that the tension sensor 73 movably connected on the connecting column 72 detects the tension of the rubber at the adjacent folding part of the rubber sheath, and the tension detected by the plurality of tension sensors 73 is compared, so that it can be known whether the tensile strength of each part of the rubber sheath meets the protection standard, thereby being able to know the overall tensile strength of the rubber sheath;

[0047] The material uniformity detection process of the rubber sheath is as follows: in the present invention, whether there is a fracture in the rubber sheath is used as the durability judgment standard in the working simulation process, and when a fracture appears in the rubber sheath, the light passing through the fracture is captured by the photosensitive sensor 74 arranged on the surface of the connecting column 72, and it is determined that the rubber sheath has a fracture and the material uniformity is unqualified.

[0048] Furthermore, a mounting spring column 711 is provided in the support ring 71, and a supporting arc column 712 fixed to the mounting spring column 711 is slidably connected in the support ring 71, and the outer edge diameter of the supporting arc column 712 is matched with the diameter of the foldable part of the rubber sheath, and an arc connecting strip 713 is provided outside the support ring 71, and the arc connecting strip 713 is provided between adjacent supporting arc columns 712, and the arc connecting strip 713 is fitted with the supporting arc column 712 through the contraction spring column 714, and a spring mounting groove is provided on the inner wall of the support ring 71, and the support ring 71 is slidably connected with the mounting spring column 711 and the contraction spring column 714 through the sliding groove, and the support ring 71 is connected with one end of the mounting spring column 711 and the contraction spring column 714 through a spring.

[0049] It should be noted that: when the rubber sheath is folded or bent, the spring column 711 is installed to provide support force for the support arc column 712, so that the support arc column 712 can always fit the folded inner wall of the rubber sheath, and fit the notch of the support ring 71 through the arc connecting strip 713, without causing damage to the inner wall of the rubber sheath, so as to achieve the effect of improving the detection accuracy of the durability detection mechanism;

[0050] A universal connection groove is provided between the connection columns 72 to provide a movable space for the tension elastic columns externally connected to the upper and lower ends of the tension sensor 73. The tension elastic columns are made of elastic material and can be compressed and stretched as the rubber sheath is folded and extended.

[0051] Furthermore, a closed sleeve 8 is fixedly installed on the top of the detection platform 1 , and an annular light source 81 is fixed on the inner wall of the closed sleeve 8 . When a fracture occurs in the rubber sheath, light from the annular light source 81 passes through the fracture and is captured by the photosensor 74 .

[0052] It should be noted that: when the ambient light simulated for the rubber sheath is weak, a closed sleeve 8 can be fixedly installed on the top of the test platform 1, and the light intensity during the rubber sheath test can be enhanced by the annular light source 81, so that the photosensitive sensor 74 can capture the light passing through the fracture of the rubber sheath in time;

[0053] When simulating the aging working state of the rubber sheath, an existing temperature control device can also be set in the closed sleeve 8 to adjust the temperature of the simulated environment of the rubber sheath, accelerate the aging speed of the rubber sheath, and amplify the performance defects of the rubber sheath in the durability simulation test.

[0054] Working principle:

[0055] The present invention is divided into a durability simulation process and a durability simulation detection process when performing a test on the rubber sheath, wherein the folding and bending folding working process of the rubber sheath can be simulated by the durability simulation mechanism, and the tensile strength and material uniformity of the rubber sheath in the simulated working process can be detected by the durability detection mechanism, wherein the judgment basis of the material uniformity of the rubber sheath is whether there is a fracture in the rubber sheath;

[0056] The durability simulation process of the rubber sheath is divided into a folding work process and a bending work process, wherein the folding work simulation process of the rubber sheath is as follows: when the rubber sheath is folded, the twisting simulation motor 4 is turned on and kept at a constant speed, and the folding simulation motor 6 is turned on to rotate the folding simulation column 61, thereby driving the movable clamping bracket 3 slidably connected to the folding simulation groove 611 to perform lifting and reciprocating motion, and driving the top of the rubber sheath clamped by the simulated closing column 323 to perform synchronous motion, so as to fold the rubber sheath back and forth;

[0057] The bending simulation process of the rubber sheath is as follows: when the rubber sheath is bent and folded, the twisting simulation motor 4 and the folding simulation motor 6 are turned on at the same time, and the twisting simulation motor 4 is in a working state with adjustable speed, and the folding simulation motor 6 provides folding drive for the bending of the rubber sheath, and the clamping limit table 31 is driven to rotate by the twisting simulation motor 4, so that the movable clamping column 32 makes a circular motion at the bottom of the clamping limit table 31, and the movable clamping column 32 is supported by the compression spring 5, so that the movable clamping column 32 makes a circular motion after deviating from the bottom center of the clamping limit table 31, and the sliding of the movable clamping column 32 drives the top of the rubber sheath clamped by the simulated closing column 323 to move synchronously, so that the rubber sheath is bent as a whole, so that the subsequent durability testing mechanism can test the tensile strength and material uniformity of the rubber sheath when it is working;

[0058] The bending degree of the rubber sheath can be changed by changing the rotation speed of the output shaft of the twist simulation motor 4, thereby changing the rotation speed of the movable clamping column 32, so that the centripetal force required by the movable clamping column 32 is increased, that is, the movable clamping column 32 needs to further squeeze the compression spring 5 to obtain a greater centripetal force, so that by changing the position of the movable clamping column 32, the bending degree of the rubber sheath can be changed within a certain range;

[0059] The durability simulation test process of the rubber sheath is divided into testing the tensile strength and material uniformity of the rubber sheath in the folded and bent folded state, wherein the tensile strength test process of the rubber sheath is as follows: when the rubber sheath is simulated, the spacing between the plurality of adjacent support rings 71 is changed by the rubber sheath being in the extended state, so that the tension sensor 73 movably connected on the connecting column 72 detects the tension of the rubber at the adjacent folding part of the rubber sheath, and the tension detected by the plurality of tension sensors 73 is compared, so as to know whether the tensile strength of each part of the rubber sheath meets the protection standard, thereby knowing the overall tensile strength of the rubber sheath;

[0060] The material uniformity detection process of the rubber sheath is as follows: In the present invention, whether there is a fracture in the rubber sheath is used as the durability judgment standard in the working simulation process, and when a fracture occurs in the rubber sheath, the light passing through the fracture is captured by the photosensitive sensor 74 arranged on the surface of the connecting column 72, and it is determined that the fracture occurs in the rubber sheath and the material uniformity is unqualified;

[0061] In order to ensure that the rubber sheath can be captured by the photosensitive sensor 74 after multiple working process simulations, when determining whether the rubber sheath has a fracture, detection can be performed during the folding and bending simulation of the rubber sheath, so that the fracture of the rubber sheath is deformed to form a gap, thereby facilitating light to pass through the fracture and be captured by the photosensitive sensor 74.

[0062] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A material testing device for rubber preparation, comprising a testing table (1) for rubber sheath testing, characterized in that: The testing platform (1) is provided with a clamping assembly, the clamping assembly is composed of a bottom clamping sleeve (11) and a top clamping sleeve (12), and the inner diameters of the bottom clamping sleeve (11) and the top clamping sleeve (12) are both adjusted by adjusting bolts, and the testing platform (1) is provided with a durability simulation mechanism and a durability detection mechanism; The durability simulation mechanism is used to simulate the working state of the rubber sheath, and is composed of a clamping and matching assembly and a simulation assembly arranged on the top of the test platform (1). The clamping and matching assembly includes a sealing clamping disk (2) and a movable clamping bracket (3) arranged on the test platform (1). A locking column (21) is fixedly installed on the sealing clamping disk (2). The locking column (21) locks the bottom end of the rubber sheath through a bottom clamping sleeve (11). The bottom of the movable clamping bracket (3) is rotatably connected to a clamping limit platform (31). The bottom of the clamping limit platform (31) is slidably connected to a movable clamping column (32) through a twisting limit sliding groove. The simulation component comprises a twisting simulation motor (4) arranged on the top of the movable clamping bracket (3), the output shaft of the twisting simulation motor (4) is fixed to the clamping limit platform (31), the clamping limit platform (31) provides a supporting force for the movable clamping column (32) through a compression spring (5), and a folding simulation motor (6) is arranged on the top of the movable clamping bracket (3), the output shaft of the folding simulation motor (6) is fixed to a folding simulation column (61), and the folding simulation column (61) is slidably connected to the movable clamping bracket (3) through a folding simulation groove (611); A positioning magnet (311) is fixed inside the clamping limit platform (31), and a magnetic suction column (321) is arranged on the side of the movable clamping column (32) away from the compression spring (5), and the positioning magnet (311) locks the movable clamping column (32) at the bottom center of the clamping limit platform (31) by attracting the magnetic suction column (321); The durability detection mechanism is used to detect the working performance of the rubber sheath, and comprises a detection bar (7) arranged between a locking column (21) and a movable clamping column (32), wherein the detection bar (7) is composed of a support ring (71) and a connecting column (72), a tension sensor (73) is arranged between two adjacent connecting columns (72), and a photosensitive sensor (74) is arranged on the surface of the connecting column (72).

2. A rubber preparation material detection test device according to claim 1, characterized in that: The outer surfaces of the locking column (21) and the movable clamping column (32) are both provided with closed rings, which cooperate with the bottom clamping sleeve (11) and the top clamping sleeve (12) to close the inner and outer spaces of the rubber sheath.

3. A rubber preparation material detection test device according to claim 1, characterized in that: The movable clamping column (32) is movably connected to a simulated closing column (323) via a universal joint (322); the simulated closing column (323) is plugged into the top end of the rubber sheath and cooperates with the top clamping sleeve (12) to lock the top end of the rubber sheath.

4. A rubber preparation material detection test device according to claim 1, characterized in that: A folding driving arm (33) is fixed on the top of the movable clamping bracket (3); the folding driving arm (33) is slidably connected to the folding simulation groove (611) via a driving column (331); and the folding simulation groove (611) is arranged in an annular wave shape.

5. A rubber preparation material detection test device according to claim 1, characterized in that: A mounting spring column (711) is arranged in the support ring (71), and a supporting arc column (712) fixed to the mounting spring column (711) is slidably connected in the support ring (71), and the outer diameter of the supporting arc column (712) is matched with the diameter of the foldable part of the rubber sheath.

6. A rubber preparation material detection test device according to claim 5, characterized in that: An arc-shaped connecting strip (713) is arranged outside the support ring (71), and the arc-shaped connecting strip (713) is arranged between two adjacent support arc-shaped columns (712), and the arc-shaped connecting strip (713) is fitted with the support arc-shaped column (712) through a contraction spring column (714), and a spring installation groove is opened on the inner wall of the support ring (71), and the support ring (71) is slidably connected with the installation spring column (711) and the contraction spring column (714) through a sliding groove, and the support ring (71) is connected with one end of the installation spring column (711) and the contraction spring column (714) through a spring.

7. A rubber preparation material detection test device according to claim 1, characterized in that: A closed sleeve (8) is fixedly mounted on the top of the detection platform (1), and an annular light source (81) is fixed on the inner wall of the closed sleeve (8). When a fracture occurs in the rubber sheath, light from the annular light source (81) passes through the fracture and is captured by the photosensitive sensor (74).

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